(19)
(11) EP 1 921 292 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.11.2010 Bulletin 2010/44

(43) Date of publication A2:
14.05.2008 Bulletin 2008/20

(21) Application number: 07119942.6

(22) Date of filing: 05.11.2007
(51) International Patent Classification (IPC): 
F02C 7/12(2006.01)
 F01D 25/12(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 10.11.2006 US 595668

(71) Applicant: GENERAL ELECTRIC COMPANY
Schenectady, NY 12345 (US)

(72) Inventors:
  • Lee, Ching-Pang
    Cincinnati, OH 45243 (US)
  • Moniz, Thomas Ory
    Loveland, OH 45140 (US)
  • Orlando, Robert Joseph
    West Chester, OH 45069 (US)

(74) Representative: Bedford, Grant Richard 
Global Patent Operation - Europe GE International Inc. 15 John Adam Street
London WC2N 6LU
London WC2N 6LU (GB)

   


(54) Compound tubine cooled engine


(57) A gas turbine engine (10) includes a compressor (18), combustor (20), and high pressure turbine (22) operatively joined together. The turbine (22) includes a row of nozzle vanes (42) followed by a row of rotor blades (44). The vanes (42) and blades (44) have corresponding forward and aft internal cooling channels (52,54,60,62). First, second, third, and fourth bleed circuits (68,70,72,74) are joined in flow communication with different stages of the compressor (18) for bleeding pressurized air therefrom at different pressures to provide coolant to the forward and aft channels (52,54,60,62) of the turbine vanes (42) and blades (44).







Search report